Патент USA US2105328код для вставки
Jan. 11, 1938. F. R. MOLITOR 2,105,328 RECIPROCATING BED MOTiON FOR FLAT BED PRESSES Filed Dec. 50, 1936 WITNESSES INVENTOR ) I Fr-eclerickJLJYloZii'Or’ ‘ /'L] BY Patented Jan. 11, 1938 ' ' ' 2,105,328 NlTEDv STATES PATENT OFFICE 2,105,328 RECIPROOATING BED MOTION FOR FLAT BED PRESSES Frederick R. Molitor, New York, N. Y. Application December 30, 1936, Serial No. 118,287 3 Claims. (Ol. 101-282) This invention relates to printing presses, and ley I6 accommodates the driving belt I"! passing particularly to a reciprocating bed motion for .over the small pulley l8 driven by the prime ilat bed presses, the object being to provide an mover IS. The prime mover I9 is usually an improved simpli?ed construction of means for 5 moving the bed and associated parts. Another object of the invention is to provide a reciprocating bed motion which permits an im » pression to be made upon each complete revolu~ tion of the impression cylinder. 10 A further object,‘ more speci?cally, is to pro vide a reciprocating motion for ?at bed presses wherein the impression cylinder and the bed are so intergeared that the bed will move on its for ward stroke during the ?rst half of the revolu 15 tion of the impression cylinder and will move on the return stroke upon the second half of the revolution of the impression cylinder. In the accompanying drawing: Fig. 1 is a fragmentary side elevation illustrat 20 ing an embodiment of the invention; Fig. 2 is a fragmentary sectional view through Fig. 1 approximately on the line 2—2; Fig. 3 is a fragmentary sectional view through Fig. 1 approximately on the line 3—3, the same 25 being on a slightly enlarged scale. Referring to the accompanying drawing by numerals, | indicates a frame of a ?at bed press. This press may be of any desired type, as for instance of the type known as the Miehle flat bed 30 printing machine. This machine is provided with a bed 2 of the usual kind and an impres sion roll 3 of the usual kind. It will be under stood that paper sheets are fed to the machine in the usual way and as the bed 2 reciprocates 35 the sheets will be printed upon successively. The bed 2 may be supported and guided by suitable members 4 and has a rack 5 rigidly secured there to, preferably on the under surface. A bed gear wheel 6 continually meshes with 40 rack 5 and acts as means for moving the rack. Gear wheel 6 is keyed or otherwise rigidly secured to shaft 1, to which is keyed or otherwise secured a pinion 8. A comparatively large loose gear Wheel 9 is mounted on the shaft 1 and is rotat 45 ably mounted between pinion 8 and abutment Ill. The loose gear wheel 9 continually meshes with the roller gear H which is connected through electric motor and acts to provide power for driv ing the various parts just described. It will be observed that when the motor I9 is functioning the various gear Wheels just described will be rotating. As the pinion l3 rotates it will natu rally move the wrist pin 20 in a circle. Wrist pin 20 is rotatably mounted in a link 2| which 10 is pivotally connected at 22 to an arm 23. Arm 23 is rigidly secured to a hollow shaft 24 as shown in Fig. 3. A second arm 25 is also rigidly secured to hollow shaft 24 so that the arms 23 and 25 will move in unison. These arms are each 15 provided with a slot 26 through which the re spective pins 2'! and 28 extend. These respec— tive pins are adapted to be clamped tightly to the respective arms, while allowing the respec tive links 2| and 29 to freely swing. 20 Link 29 is connected through a journal pin 30 to the arm 3|. Journal pin 30 also extends through the power link 32 so that when the arm 3| swings, power link 32 will be reciprocated. It will be understood that the pin 30 is similar to 25 the pin 28 and is rigidly clamped to the arm 3| in a slot 33, while at the same time allowing a proper swinging movement of links 29 and 32. The power link 32 is pivotally connected at 34 to a rack 35 which is continually in mesh with 30 the pinion 8, whereby said pinion is moved back and forth as link 32 functions. Rack 35 is pro vided with an arm 36 which is preferably integral therewith, said arm being journaled on the hol low shaft 24 as shown in Fig. 3. 35 A standard 31 is carried by frame I and rigidly secured thereto in any desired manner, said standard accommodating the pin 38 as shown in Fig. 3, said pin being rigidly secured to the stand ard by the set screw 39. Standard 40 supports 40 the pin 4| in a similar manner to that shown in Fig. 3. Arm 3| is loosely mounted on pin 4| so as to readily swing. The various slots 42, 26 and 33 permit a desired adjustment of the respective parts so that a proper action is secured. A rod 45 tate therewith. As shown in Fig. 1, a driving pinion |4 con tinually meshes with the loose gear 9, said pin~ 43 is pivotally connected at 44 to arm 36 and loosely passes through an abutment 45. A spring 46 acts against abutment 45 and a stop 47. Spring 46 is under tension at all times and tends to balance the weight of the respective parts 50 while at the same time giving a slight tendency to rack 35 to move from the position shown in Fig. 1 to the left. ion being rigidly connected with shaft I5, to 65 which a pulley I6 is also rigidly secured. Pul By reason of the construction just described, when the motor I9 is functioning the various 55 shaft l2 with the impression drum 3 so as to ro tate therewith. A driving disk I3 is also keyed or 50 otherwise rigidly secured to shaft l2 so as to ro 2 ‘2,105,328 parts will also function and cause the bed 21 to reciprocate, while the impression cylinder 3 ro tates always in the same direction. , For the ?rst half of‘ the rotation of the impression cylinder 3, bed 2 will move forward to its extreme posi 3. The combination with a ?at bed press hav ing an impression cylinder and a reciprocating bed, of means for causing said bed to have one complete cycle of action upon one revolution of said cylinder, said means including a’ rack se tion, and then on the second half or completion oif the rotation, bed 2 will move back to its ?rst or starting position. It will therefore be seen cured to said bed, a primary gear wheel secured to said cylinder, an idler gear continually mesh ing with said primary gear wheel, a pinion con that upon each revolution of the impression cyl tinually meshing with said idler gear, power means for rotating said pinion, a rack actuating 10 gear continually meshing with said rack, a pinion rigidly connected with said rack actuating gear, a segmental rack continually meshing with said 10 inder, one sheet of paper is printed. ‘ I claim: 1. A reciprocating bed motion for ?at bed presses including a rack secured to the bed of the press, a gear wheel continually meshing with 15 said rack, means for driving said gear Wheel;v means actuated by the impression cylinder. of second-‘mentioned pinion, said segmental rack having an arm extending normal thereto, means at the outer end of said arm for pivotally sup the press for actuating said means, and a spring porting the arm so that said segmental rack will member cushioning the motion of said means. continually mesh with said second~mentioned 2.'In a flat bed printing press having a re pinion, a substantially reciprocating link having , ciprocating bed and a rotatable impression cylin one end pivotally connected to said cylinder so der, means actuated by said cylinder to cause that as said cylinder rotates said link will re rsaidlbed to function, said means including a disk , ciprocate,.a power link having one end pivotally secured'to said cylinder so as to rotate therewith, a journal pin carried by said disk and positioned 'to'move in a circle when said disk rotates, a substantially reciprocating link'having one end journaled on said pin, a segmental rack provided with an arm extending normal thereto, means for pivotally mounting the free end of said arm, link mechanism connected to one-end of said link and to one end of said segmental rack for re ciprocating said rack, a pinion continually mesh ing with said segmental rack, a bed rack secured - to said bed, and a gear wheel-rigidly‘ secured to said pinion for meshing with said bed rack. secured to said segmental'rack near one end, an arm having one end pivotally connected to 25 the outer end of said power link and the oppo site end pivotally mounted in a fixed position, and means forconnecting the outer end of ,said,, reciprocating link with the joint, of said power link and said arm so that as said reciprocating Y link functions motion will be' transmitted through said power link to saidsegmental rack for reciprocating the same. ' FREDERICK R. MOLITOR.